WO2017203919A1 - Multiplexeur, circuit frontal haute fréquence, et appareil de communication - Google Patents

Multiplexeur, circuit frontal haute fréquence, et appareil de communication Download PDF

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Publication number
WO2017203919A1
WO2017203919A1 PCT/JP2017/016275 JP2017016275W WO2017203919A1 WO 2017203919 A1 WO2017203919 A1 WO 2017203919A1 JP 2017016275 W JP2017016275 W JP 2017016275W WO 2017203919 A1 WO2017203919 A1 WO 2017203919A1
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WIPO (PCT)
Prior art keywords
filter
terminal
frequency signal
frequency
hybrid
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Application number
PCT/JP2017/016275
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English (en)
Japanese (ja)
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WO2017203919A9 (fr
Inventor
真也 溝口
正範 東出
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株式会社村田製作所
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Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Priority to CN201780032870.9A priority Critical patent/CN109196784B/zh
Publication of WO2017203919A1 publication Critical patent/WO2017203919A1/fr
Publication of WO2017203919A9 publication Critical patent/WO2017203919A9/fr
Priority to US16/199,619 priority patent/US10484039B2/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • H01P1/2056—Comb filters or interdigital filters with metallised resonator holes in a dielectric block
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
    • H01P5/22—Hybrid ring junctions
    • H01P5/227—90° branch line couplers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H7/463—Duplexers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B2001/1063—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal using a notch filter

Definitions

  • the duplexer disclosed in Patent Document 1 achieves high isolation between transmission and reception while transmitting transmission signals and reception signals with low loss.
  • the fourth filter that reinforces the pass characteristic of the high-frequency signal in the second pass band is arranged compared to the case where each of the second filter and the third filter is configured by a band pass filter, the first pass band.
  • the entire multiplexer can be further reduced in size while ensuring high isolation of the high-frequency signal in the second passband.
  • each of the first and second 90 ° hybrids, the first filter, the second filter, and the third filter has a rectangular shape, and in the plan view, in the longitudinal direction of the mounting substrate ( 1) the first filter, (2) the second filter, (3) the first and second 90 ° hybrids, and (4) the third filter are arranged in this order, and the first filter A long side of the filter, a short side of the second filter, and a short side of the third filter are arranged substantially parallel to the longitudinal direction, and input terminals of the second filter and the third filter And the second filter and the second filter so that the distance between the output terminals of the second filter and the third filter is the shortest across the first and second 90 ° hybrids.
  • Three filters may be arranged.
  • the total length of the wiring connecting the second filter, the third filter, and the first and second 90 ° hybrids can be shortened, so that the mounting board can be reduced in area and can pass through the multiplexer. It is possible to reduce the propagation loss of high frequency signals.
  • the first filter, the second filter, the third filter, and the first and second 90 ° hybrids are all arranged at the shortest distance, so that the mounting board can be further reduced in area and pass through the multiplexer.
  • the propagation loss of the high frequency signal to be performed can be further reduced.
  • each of the long side of the second filter and the long side of the third filter may be longer than the length of the short side of the first filter.
  • the mounting board can be reduced in area.
  • the first filter, the second filter, the third filter, and the first and second 90 ° hybrids are all arranged at the shortest distance, so that the mounting board can be further reduced in area and pass through the multiplexer.
  • the propagation loss of the high frequency signal to be performed can be further reduced.
  • a multiplexer includes a plurality of transmission lines connected to an antenna terminal, and other transmission lines for a high-frequency signal passing through one of the plurality of transmission lines.
  • a first 90 ° hybrid that shifts the phase of a high-frequency signal that passes through approximately 90 °, and a termination resistor that has a plurality of transmission lines and passes through one of the plurality of transmission lines.
  • FIG. 1 is a circuit configuration diagram of a duplexer according to the first embodiment.
  • FIG. 2 is a circuit configuration diagram of a duplexer according to a modification of the first embodiment.
  • FIG. 3 is a diagram for explaining a transmission state of a transmission signal in the duplexer according to the first embodiment.
  • FIG. 4 is a diagram for explaining a transmission state of a received signal in the duplexer according to the first embodiment.
  • FIG. 5 is a diagram for explaining isolation between transmission and reception in the duplexer according to the first embodiment.
  • FIG. 6 is a plan view showing a circuit arrangement of the duplexer according to the second embodiment.
  • FIG. 7A is a perspective view illustrating a configuration of a multi-block type dielectric filter.
  • FIG. 7A is a perspective view illustrating a configuration of a multi-block type dielectric filter.
  • FIG. 1 is a circuit configuration diagram of a duplexer 1A according to the first embodiment.
  • an antenna element 2 and a duplexer 1A are shown.
  • the duplexer 1A is disposed, for example, in a base station of a mobile communication system or a front end unit of a mobile phone.
  • the duplexer 1A is a kind of multiplexer, and includes a transmission side filter 10A, a reception side filter 20A, 90 ° hybrids 30 and 40, notch filters 50A and 50B, a termination resistor 70, an antenna terminal 110, and a transmission terminal 120. And a receiving terminal 130.
  • the duplexer 1 ⁇ / b> A outputs the high-frequency transmission signal input from the transmission terminal 120 from the antenna terminal 110, and outputs the high-frequency reception signal input from the antenna terminal 110 from the reception terminal 130.
  • the duplexer 1A has a function that allows the high-frequency transmission signal and the high-frequency reception signal to be transmitted and received at the same time without interference.
  • each component of the duplexer 1A will be described.
  • the 90 ° hybrid 30 is connected to the antenna terminal 110, has a plurality of transmission lines, and a high-frequency signal that passes through another transmission line with respect to a high-frequency signal that passes through one transmission line of the plurality of transmission lines. Is a first 90 ° hybrid that shifts the phase of the first 90 °.
  • the 90 ° hybrid 30 has a terminal L1 (first terminal), a terminal L2 (second terminal), a terminal L3 (third terminal), and a terminal L4 (fourth terminal).
  • the phase difference between the terminal L3 and the terminal L4 is approximately 90 °.
  • the phase difference between the terminal L3 and the terminal L4 is approximately 90 °.
  • the phase difference between the terminal L1 and the terminal L2 is approximately 90 °.
  • the 90 ° hybrid 40 has a terminal R1 (fifth terminal), a terminal R2 (sixth terminal), a terminal R3 (seventh terminal), and a terminal R4 (eighth terminal).
  • the phase difference between the terminal R3 and the terminal R4 is approximately 90 °.
  • the phase difference between the terminal R3 and the terminal R4 is approximately 90 °.
  • the phase difference between the terminal R1 and the terminal R2 is approximately 90 °.
  • the notch filter 50A has a first terminal (first input / output terminal) connected to the terminal L3 of the 90 ° hybrid 30 and the other terminal (second input / output terminal) connected to the terminal R3 of the 90 ° hybrid 40. 2 filters.
  • the notch filter 50B has one terminal (first input / output terminal) connected to the terminal L4 of the 90 ° hybrid 30 and the other terminal (second input / output terminal) connected to the terminal R4 of the 90 ° hybrid 40. 3 filters.
  • the total size of the duplexer 1A can be reduced as compared with the prior art.
  • the number of resonators constituting the transmitting filter 10A, the number of resonators constituting the notch filter 50A, and the number of resonators constituting the notch filter 50B may be smaller than 3 times the number of resonators constituting the transmitting filter 10A.
  • Matching elements 80A and 80B are, for example, phase adjusters and attenuators, and have a function of adjusting the phase balance and amplitude balance between the signal path passing through notch filter 50A and the signal path passing through notch filter 50B. Matching elements 80A and 80B are not essential components of duplexer 1A according to the present embodiment.
  • the transmission-side filter 10A is a band-pass filter, and it is necessary to provide attenuation bands on the low-frequency side and the high-frequency side of the transmission band.
  • the number of stages of the dielectric coaxial resonator for forming the steepness on the band side and the attenuation pole increases.
  • the notch filters 50A and 50B are notch filters as shown in the first embodiment, and only an attenuation pole corresponding to the transmission band needs to be provided. Therefore, a dielectric coaxial for forming the attenuation pole is provided.
  • the number of resonator stages may be smaller than that of the transmission filter 10A. From this relationship, the transmission side filter 10A has the greatest influence on the size of the duplexer 1A. Therefore, in reducing the size of the duplexer 1A, it is important how to arrange other circuit configurations in a compact manner with respect to the transmission-side filter 10A.
  • FIG. 8 is a plan view showing a circuit arrangement of a duplexer 1C according to the first modification of the second embodiment.
  • the duplexer 1C shown in the figure further includes 90 ° hybrids 30 and 40, a transmission side filter 10A, a reception side filter 20A, and notch filters 50A and 50B. , A termination resistor 70, and a mounting substrate 100 on which matching elements 80A and 80B are mounted.
  • the input terminal 11 of the transmission filter 10A is connected to the transmission terminal 120 disposed on the mounting substrate 100, and the output terminal 12 of the transmission filter 10A is connected to the terminal L1 of the 90 ° hybrid 30. Further, the long side of the notch filter 50A and the long side of the notch filter 50B are arranged to face each other.
  • the antenna terminal 110, the transmission terminal 120 (first external connection terminal), and the reception terminal 130 (second external connection terminal) shown in FIG. 1 are arranged on the mounting substrate 100.
  • the reception-side filter 20A is the reception terminal 130 (second external connection terminal). Is located closest to.
  • the wiring length connecting the receiving filter 20A and the receiving terminal 130 can be shortened, so that the area of the mounting substrate 100 can be reduced and the propagation loss between the antenna terminal 110 and the receiving terminal 130 can be reduced.
  • the transmission filter 10A and the notch filters 50A and 50B are required to have high power durability.
  • the transmission-side filter 10A and the notch filters 50A and 50B are dielectric filters formed of dielectric resonators.
  • the length of each of the long side of the notch filter 50A and the long side of the notch filter 50B is longer than the length of the short side of the transmission filter 10A. It is preferable to be applied to the case.
  • the antenna terminal 110 is disposed between the notch filters 50A and 50B and the transmission-side filter 10A when the mounting substrate 100 is viewed in plan.
  • the wiring length connecting the antenna terminal 110 and the 90 ° hybrid 30 can be shortened, so that the area of the mounting substrate 100 can be saved and the propagation loss between the antenna terminal 110 and 90 ° hybrid 30 can be reduced. .
  • FIG. 9 is a plan view showing a circuit arrangement of a duplexer 1D according to the second modification of the second embodiment.
  • the duplexer 1D shown in the figure further includes 90 ° hybrids 30 and 40, a transmission side filter 10A, a reception side filter 20A, and notch filters 50A and 50B. , A termination resistor 70, and a mounting substrate 100 on which matching elements 80A and 80B are mounted.
  • the transmission side filter 10A and the notch filter 50A are arranged so that the distance between the transmission side filter 10A and the notch filter 50A is the shortest.
  • the transmission-side filter 10A, the notch filters 50A and 50B, and the 90 ° hybrids 30 and 40 are all arranged at the shortest distance, so that the mounting board 100 can be further reduced in area and pass through the duplexer 1D. High-frequency signal propagation loss can be further reduced.
  • the 90 ° hybrid 30 among the 90 ° hybrids 30 and 40, the transmission side filter 10A, and the notch filters 50A and 50B is disposed closest to the antenna terminal 110.
  • FIG. 10 is a functional block configuration diagram of the communication device 8 and its peripheral circuits according to the third embodiment.
  • a communication device 8 an antenna element 2, a matching circuit 6, and a baseband signal processing circuit 5 are shown.
  • the communication device 8 includes a high frequency front end circuit 7 and an RF signal processing circuit 4.
  • the high-frequency front-end circuit 7 includes the duplexer 1A (or any one of 1B to 1D) according to the first and second embodiments, a power amplifier circuit 3A, and a low noise amplifier circuit 3B.
  • the matching circuit 6 is a circuit that is connected to the antenna element 2 and the duplexer 1A and performs impedance matching between the antenna element 2 and the high-frequency front-end circuit 7. As a result, the high-frequency front-end circuit 7 can receive the received signal from the antenna element 2 with low loss and output the transmission signal to the antenna element 2 with low loss.
  • the matching circuit 6 is composed of one or more high-frequency circuit components, and includes, for example, a chip-shaped inductor and a chip-shaped capacitor. The matching circuit 6 may not be provided.
  • the matching circuit 6 may be a variable matching circuit that varies the impedance according to the selected band or mode when the communication device 8 is compatible with multiband and multimode.
  • the low noise amplifier circuit 3B is an amplification circuit that amplifies the high frequency reception signal output from the duplexer 1A and outputs the amplified signal to the RF signal processing circuit 4.
  • the RF signal processing circuit 4 processes a high-frequency reception signal input from the antenna element 2 via a reception-side signal path by down-conversion or the like, and a received signal generated by the signal processing is a baseband signal processing circuit Output to 5.
  • the RF signal processing circuit 4 is, for example, an RFIC (Radio Frequency Integrated Circuit).
  • the RF signal processing circuit 4 performs signal processing on the transmission signal input from the baseband signal processing circuit 5 by up-conversion or the like, and outputs the high-frequency transmission signal generated by the signal processing to the power amplifier circuit 3A.
  • the high-frequency front end circuit 7 may include the following multiplexer instead of the duplexer 1A (or any one of 1B to 1D) according to the first and second embodiments.
  • the multiplexer is connected to an antenna terminal, has a plurality of transmission lines, and has a phase of a high-frequency signal passing through another transmission line with respect to a high-frequency signal passing through one transmission line of the plurality of transmission lines.
  • the first 90 ° hybrid that is shifted by approximately 90 °, the other transmission for the high-frequency signal that is connected to the terminating resistor, has a plurality of transmission lines, and passes through one of the plurality of transmission lines.
  • a second 90 ° hybrid that shifts the phase of the high-frequency signal passing through the line by approximately 90 °; a first filter that is connected to the first 90 ° hybrid and selectively passes the high-frequency signal in the first passband; A second filter and a third filter connected to both the first 90 ° hybrid and the second 90 ° hybrid and having the same filter characteristics as each other.
  • the third filter reflects a high-frequency signal in the first pass band and reflects a high-frequency signal in a high-frequency band including the first pass band by reflecting a high-frequency signal in the first pass band and reflecting a high-frequency signal in the high-frequency band including the first pass band.
  • a low-pass filter that passes a high-frequency signal on the lower frequency side than the band, and a high-pass filter that reflects a high-frequency signal in the low frequency band including the first pass band and passes a high-frequency signal on the higher frequency side than the low frequency band , Either.
  • the present invention can be widely used in communication devices such as mobile phones and base stations as duplexers (multiplexers), high-frequency front-end circuits, and communication devices that require high power durability and high isolation.

Abstract

Un duplexeur (1A) selon l'invention comprend : un coupleur hybride à 90° (30) qui est connecté à une borne d'antenne (110) ; un coupleur hybride à 90° (40) qui est connecté à une résistance de terminaison (70) ; un filtre sur le côté transmission (10A) qui est connecté au coupleur hybride à 90° (30) ; et des filtres à coupure brusque (50A et 50B) qui ont des caractéristiques de filtrage similaires et sont connectés aux deux coupleurs hybrides à 90° (30 et 40), chacun des filtres à coupure brusque (50A et 50B) étant un filtre à élimination de bande qui réfléchit le signal haute fréquence d'une bande de transmission et permet à des signaux haute fréquence à l'extérieur de la bande de transmission de passer.
PCT/JP2017/016275 2016-05-27 2017-04-25 Multiplexeur, circuit frontal haute fréquence, et appareil de communication WO2017203919A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780032870.9A CN109196784B (zh) 2016-05-27 2017-04-25 多工器、高频前端电路以及通信装置
US16/199,619 US10484039B2 (en) 2016-05-27 2018-11-26 Multiplexer, radio frequency front-end circuit, and communication device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016106697 2016-05-27
JP2016-106697 2016-05-27

Related Child Applications (1)

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US16/199,619 Continuation US10484039B2 (en) 2016-05-27 2018-11-26 Multiplexer, radio frequency front-end circuit, and communication device

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WO2017203919A1 true WO2017203919A1 (fr) 2017-11-30
WO2017203919A9 WO2017203919A9 (fr) 2018-01-11

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CN (1) CN109196784B (fr)
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CN109196784B (zh) 2020-07-28
WO2017203919A9 (fr) 2018-01-11

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